[GH-ISSUE #1138] After update to macOS Monterey 12.5.1 Volume Control is not working. #672

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opened 2026-05-05 06:28:40 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 06:28:40 -06:00

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Originally created by @ceadmond on GitHub (Aug 18, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1138

Before opening the issue, have you...?

Searched for existing issues
Read through the Monitor-Troubleshooting Wiki
Updated MonitorControl to the latest version (if applicable)

Describe the issue

After update to macOS Monterey 12.5.1 volume control is not working on my PHILIPS 279P1.

Expected behavior

Volume control is not working with no sound.

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.5.1 Monterey
- Mac model: MacBook Pro (14-inch, 2021)
- MonitorControl version: v4.1.0
- Monitor(s): PHL 279P1
- Monitor Cable(s)/Connection(s): MacBook Pro -> Baseus USB 4 Dock Cable -> PHL 279P1
- Apple Silicon/M1 (yes or no): yes

Originally created by @ceadmond on GitHub (Aug 18, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1138 ### Before opening the issue, have you...? - [X] Searched for existing issues - [X] Read through [the Monitor-Troubleshooting Wiki](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) - [X] Updated MonitorControl to the latest version (if applicable) ### Describe the issue After update to macOS Monterey 12.5.1 volume control is not working on my PHILIPS 279P1. ### Expected behavior Volume control is not working with no sound. ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: 12.5.1 Monterey - Mac model: MacBook Pro (14-inch, 2021) - MonitorControl version: v4.1.0 - Monitor(s): PHL 279P1 - Monitor Cable(s)/Connection(s): MacBook Pro -> Baseus USB 4 Dock Cable -> PHL 279P1 - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror

2026-05-05 06:28:40 -06:00

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gitea-mirror commented

2026-05-05 06:28:45 -06:00

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@waydabber commented on GitHub (Aug 26, 2022):

Do you have this issue happen when the display is directly connected without a dock? Does brightness control work between 50%-100% brightness (via DDC)?

@waydabber commented on GitHub (Aug 26, 2022): Do you have this issue happen when the display is directly connected without a dock? Does brightness control work between 50%-100% brightness (via DDC)?

gitea-mirror commented

2026-05-05 06:28:47 -06:00

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@niklasnolte commented on GitHub (Aug 26, 2022):

i have the problem when directly connected via usbc. I can slide the volume bar, but nothing changes.
Mine is a LENOVO P27h-10

@niklasnolte commented on GitHub (Aug 26, 2022): i have the problem when directly connected via usbc. I can slide the volume bar, but nothing changes. Mine is a LENOVO P27h-10

gitea-mirror commented

2026-05-05 06:28:49 -06:00

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@rkieru commented on GitHub (Sep 2, 2022):

I'm facing a similar issue, specs below:

macOS v12.5.1 (21G83)
MacBook Pro (14-inch, 2021), Apple M1 Pro
Dell S2721QS
Display Port to USB-C connection

I can control brightness with my keyboard controls just fine, but volume is not honored.

@rkieru commented on GitHub (Sep 2, 2022): I'm facing a similar issue, specs below: - macOS v12.5.1 (21G83) - MacBook Pro (14-inch, 2021), Apple M1 Pro - Dell S2721QS - Display Port to USB-C connection I can control brightness with my keyboard controls just fine, but volume is not honored.

gitea-mirror commented

2026-05-05 06:28:50 -06:00

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@waydabber commented on GitHub (Sep 3, 2022):

If brightness control / DDC fully works but volume control does not, then the display simply does not support changing the volume via DDC. A high number of displays have a firmware like that (even mine works that way, even though it's a rather expensive Lenovo CreatorXtreme). Not much to do about that.

@waydabber commented on GitHub (Sep 3, 2022): If brightness control / DDC fully works but volume control does not, then the display simply does not support changing the volume via DDC. A high number of displays have a firmware like that (even mine works that way, even though it's a rather expensive Lenovo CreatorXtreme). Not much to do about that.